The biggest websites and the biggest Internet service providers are being summoned to Congress to testify about net neutrality.

US Rep. Greg Walden (R-Ore.), chair of the House Energy and Commerce Committee, said he is scheduling a full committee hearing titled, “Ground rules for the Internet ecosystem,” for September 7.

“Today I’m sending formal invitations to the top executives of the leading technology companies including Facebook, Alphabet, Amazon, and Netflix, as well as broadband providers including Comcast, AT&T, Verizon, and Charter Communications, inviting each of them to come and testify before our full Energy and Commerce Committee,” Walden said during a Federal Communications Commission oversight hearing this morning.